Friction draft-rigging for railway-cars.



J. FQ OCONNOR.

FRICTION DRAFT RIGGING FOR RAILWAY GARS.

APPLIUATION FILED JAN. 7, 1909.

cg.. wAsH'lNarvN. D. c,

J. F. yo'colwoR. A n FBIGTION DRAFT RIGGING POR RAILWAY CARS.

Patented May 25, 1909.

2 SHEETS-SHEET z.

APPLICATION FILED JAN. 7,1909.

922,618. Kga

" friction draft rigging for railway cars.

`z friction shell, a cap plate, a preliminary compsrrnn sfrarns rarnsronirica.

JOHN F. OCONNOR, OF CHICAGO, ILLINOIS, ASSIGNOR TO W. H. MINER COMPANYOFCHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

FRICTION DRAFT-RIGGING FOR RAILWAY-GARS.

Application filed January 7,

To all whom 'it may concern:

Be it known that I, JOHN F. OOONNOR, a citizen of the United States,residing in Chicago, in the county of Cook and State of Illinois, haveinvented a new and useful Improvement in Friction Draft Rigging forRailway-Cars, of which the following is a specification.

My invention relates to improvements in The friction draft rigging ofthe kind to which my invention relates comprises in connection with thedraw-bar, draft yoke, draft lugs and followers, a longitudinally movablepression follower projecting through the cap plate at one end of theshell, a spring bearing at one end against the preliminary compressionfollower, friction shoes within the shell bearing at the opposite endagainst the spring, a wedge between the friction shoes, anti-frictionrollers between the 'friction shoes and wedge, and a connecting bar eX-tending between the cap plate and wedge for holding all the parts incooperative or assembled relation and the spring under an initialcompression. And my present improvement consists in combination with .Ithese parts of a separate piece coupling memi i ber between the wedgeand the connecting b t! bar, provided with projecting wings or armsadapted to engage the ends of the anti-friction rollers and prevent therollers from slipping longitudinally and engaging and bindl ing orgrinding against the inner surface of the friction shell, said couplingmember and l wedge having interengaging coupling devices, and theconnecting lbar and coupling member also having interengaging couplingdevices. It further consists in connection l with these parts inproviding the cap with a socket, preferably hemispherical, to receive acoupling key, in combination with a coupling key having a hemisphericalface fitting in said socket of the cap, said key and the connecting barbeing provided with interengaging coupling devices.

My invention further consists in the novel construction of parts anddevices and in the novel combinations of parts and devices herein shownand described.

In the accompanying drawing forming a part of this specification, Figurel is a side elevation, partly in central, vertical, longitudinal sectionof a friction draft rigging embodying Patented May 25, 1909.

1909. Serial N0. 471,059.

my invention. Fig. 2 is a plan view partly in horizontal section on line2-2 of Fig. l. Fig. 3 is a cross section on line 3-3 of Fig. l. Fig. 4is a detail cross section of the friction shell on line 4 4 of Fig. l.Fig. 5 is a detail partial longitudinal section on line 5-5 of Fig. 4.Fig. 6 is a detail rear end elevation of the friction shell, cap andpreliminary compression follower. Fig. 7 is a detail side elevation ofthe separate piece roller holding or centering coupling member. Fig. 8is a detail plan view of the wedge. Fig. 9 is a detail inside elevationof the key and Fig. 10 is a detail plan view of the connecting bar orretainer partly in horizontal section. Fig. ll is a detail section online ll--ll of Fig. 9 and Fig. l2 is a detail section on line 12-12 ofFig. 3.

In the drawing, A represents the center sills or draft members of thecar to which the draft rigging is applied, A1 the front sill, B thedraw-bar, B1 the draw-bar yoke, O the side plates or stop castingshaving front, rear and intermediate stops O1 C2 C3 O4 for the followersD D1 to abut against.

E El are the draft rigging springs, the smaller one being inside thelarger, the same bearing at one end against the friction shoes Fl and atthe rear end against the preliminary compression follower F2,andvthrough it against the friction shell F. The friction shell F has aninternal friction facef in sliding frictional engagement with theexternal friction faces]r1 of the friction shoes or blocks F1. rlhepreliminary compression follower F2 is furnished with bearing lugs2which eX- tend through the cap or end plate F3 of the friction shell,preferably about one half inch so as to provide for a preliminary halfinch compression of the springs or cushioning action before the frictiondevices F Fl are forced to slide one in respect to the other. The lugsf2 on the preliminary compression follower extend through suitable holesor openings f4 in the cap or end plate F3 of the friction shell.

The friction shoes or blocks F1 are furnished with a recess or cavity f5to receive the front end of the inner or smaller spring t1; and thepreliminary compression follower F2 is furnished with an inwardlyprojecting boss f which is surrounded by the rear coil of the outer orlarger spring E.

G is the wedge and g g anti-friction rollers interposed between theinclined faces g1 of the wedge and the inclined faces f7 of the frictionshoes or blocks F1. The coupling member' M has at the end thereofconnecting with the wedge stop shoulders 'm4 co erating with similarstop shoulders f8 on tie friction shoes to hold the anti-frictionrollers g in place and prevent their getting askew. The wedge G has acoupling device g3, consisting preferably of a T shaped or shoulderedextension at the inner end of the wedge adapted to fit within thecoupling` device or soc et m of the separate piece coupling member M bywhich the wedge is couled to the connecting bar H which extendsongitudinally through the springs and connects the Wedge and frictionshoes with the cap or end plate F3 of the friction shell F.

The se arate piece coupling member M is furnishe with a coupling devicemi at its -opposite end, preferably consisting of a pair of opposinglugs with a slot m2 between them adapted to receive the web 7L of theconnecting bar, and engage the coupling devices or lugs h1 on the innerend of the connecting bar or retainer H. The detachable separate piececoupling member M is further provided with two pairs of projectingroller centering vor holding wings or arms m3, one pair of wings or"arms embracing the opposite ends of each o f the anti-friction rollers gto prevent said rollers from slipping lengthwise and thus binding orgrinding at their ends against the inner surface of the friction shellF.

The connecting member or bar H has at its inner end a head 7a2 furnishedwith segmental curved grooves h3 on its upper and lower faces and with acurved coupling flange 71,4 and a hemispherical socket h5 to receive theball face 'n of the hemispherical coupling key N. This coupling key N isfurnished on its inner or curved face with a slot nl and with curvedgrooves it? to receive the curved flange h4 of the cou ling head h2 ofthe connecting member or ar H. The key N and coupling head h2 of theconnecting bar H are assembled or connected together by first turningthese devices at an angle to each other and then swinging the key into astraight line with the axis of the connecting bar H. The cou lingmember' M and wedge G are assembler by moving one of these memberstransversely of the other. The coupling member M and connecting bar Hare assembled by inserting the coupling devices of one of these membersinto the coupling device of the other while the members are turned at anangle to each other, and then swinging the members into a straight linewith each other.

The preliminary compression follower F2 has marginal shoulders fg; whichengage shouldersf10 at the rear end of the shell and thus prevent thisfollower from turning in respect to the shell. And it has a slot f 11which receives the rear end of the connecting member or bar H so thatsaid bar cannot turn in. respect to said follower F2. And the separatepiece coupling member M through the connecting bar H prevents the wedgeand friction shoes from turning in the friction shell so that therollers thus maintained in a horizontal osition. The cap or end plate F3of the ffiction shell inter-fits with the preliminary compressionfollower F2 in a suitable recess or socket f 12 provided in the rear endof said follower for accommodation of this cap, the cap being thus alsoheld from turning.

K is the carry-iron or plate, the same having a longitudinal channel K1to receive the lower member of the draft yoke B1 and being removablysecured to the center sills or draft members ofthe car frame by bolts K2having nuts K3.

The connecting member H and coupling member M serve to hold the springsnormally under an initial tension or load, the initial tension orcompression thereof being preferably about one half inch, and also serveto hold all the parts assembled and in coperative relation with eachother, the coupling member by its roller centering arms or wings alsoserving to keep the rollers in position longitudinally and prevent theirslipping lengthwise and thus binding and grinding against the innersurface of the friction shell.

The initial tension or compression under which the connecting bar ordevice holds the springs causes the cushioning mechanism of the draftrigging to remain always of the same proper standard length,notwithstanding the wear that may take place between the frictionelements of the cushioning mechanism. The initial tension under whichthe springs are held should be, as before stated, approximately one halfinch, so as to give the draft rigging provision for taking up a largeamount of wear between the friction shoes and friction shell withoutaffecting the normal action of the draft rigging. This initial tensionunder which the connecting device holds the springs also keeps all theparts in snug and proper engagement with each other.

1. 1n a friction draft rigging, the combination with the draw-bar andfollowers, of a friction shell, friction shoes and spring within theshell, a wedge, anti-friction rollers between the wedge and frictionshoes, a preliminary compression follower, a cap plate for the frictionshell, a connecting bar and a separate piece coupling member between theconnecting bar and wedge furnished with projecting wings for centeringthe anti-friction rollers, substantially as specified.

2. .ln a friction draft rigging, the combination with the draw-bar andfollowers, of a friction shell, friction shoes and spring within ias theshell, a wedge, anti-friction rollers between the wedge and frictionshoes, a preliminary compression follower, a cap plate for the frictionshell, a connecting bar and a separate piece coupling member between theconnectiugqbar and wedge furnished with projecting wings for centeringthe anti-friction rollers, said wedge and coupling member havinginterengaging coupling devices for de tachably connecting them together,substantially as specified.

ln a friction draft rigging, the combination with the draw-bar andfollowers, of a friction shell, friction shoes and spring within theshell, a wedge, anti-friction rollers between the wedge and frictionshoes, a preliminary compression follower, a cap plate for the frictionshell, a connecting bar and a separate piece coupling member between theconnecting bar and wedge furnished with projecting wings for centeringthe anti-friction rollers, said connecting bar and coupling member'having interengaging coupling devices for detachably connecting them,substantially as specified.

4. ln a friction draft rigging, the combination with the draw-bar andfollowers, of a friction shell, a spring and friction shoes within theshell, a wedge, anti-friction rollers and a coupling member connectingwith the inner end of the wedge and having projecting arms embracing theends of the friction roller to center it, substantially as specified.

5. ln a friction draft rigging, the combination with the draw-bar andfollowers, of a friction shell, a spring and friction shoes within theshell, a wedge, anti-friction rollers and a coupling member connectingwith the inner end of the wedge and having two pairs of projecting arms,each pair embracing the opposite ends of a friction roller to center thesame, substantially as specified.

6. In a friction draft rigging, the combination with the draw-bar andfollowers, of a friction shell, a spring and friction shoes within theshell, a wedge, a preliminary compression follower interposed betweenone of the followers and the spring, a cap plate for the friction shell,said cap plate having a heinispherical socket, a connecting bar eX-tending through said cap plate into said socket and a hemispherical keyfitting in said socket and engaging said connecting member,substantially as specified.

7. ln a friction draft rigging, the combination with the draw-bar andfollowers, of a friction shell, a spring and friction shoes within theshell, a wedge, a preliminary compression follower interposed betweenone of the followers and thespring, a cap plate for the friction shell,said cap plate having a hemispherical socket, a connecting bar eX-tending through said. ca) plate into said socket and a hemispherical keyfitting in said socket and engaging said connecting bar, said connectingbar and key having interengaging curved couplings devices, substantiallyas specified.

8. ln a friction draft rigging, the combination with the draw-bar and.followers, of a friction shell, a spring and friction shoes within theshell, a wedge, a preliminary compression follower interposed betweenone of the followers and the spring, a cap plate for the friction shell,said cap plate having a hemispherical socket, a connecting bar eX-tending through said cap plate into said socket and a hemispherical keyfitting in said socket and engaging said connecting bar, said connectingbar and key having interengaging curved coupling devices, comprising acurved flange on one of said members and a curved and slotted socket onthe other of said members, substantially as specified.

9. In a friction draft rigging, the combination with the draw-bar andfollowers, of a friction shell, a spring and friction shoe within theshell, a Wedge, anti-friction rollers on each side of the wedge, apreliminary compression follower interposed between one of the followersand the spring, acap plate for the friction shell, a connecting bar, aseparate piece coupling member having roller centering arms, and a key,said connecting bar and key having interengaging coupling devices andsaid cap plate and key having interfitting ball and socket faces,substantially as specified.

l0. In a friction draft rigging, the combination with the draw-bar andfollowers, of a friction shell, a spring and friction shoes within theshell, a wedge, anti-friction rollers on each side of the wedge, apreliminary compression follower interposed between one of the followersand the spring, a cap plate for the friction shell, a connecting bar, aseparate piece coupling member having roller centering arms, and a key,said connecting bar and key having interengaging coupling devices, andsaid cap plate and key having interfitting ball and socket faces, saidcoupling member and connecting bar having interengaging couplingdevices, substantially as specified.

11. In a friction draft rigging, the combination with the draw-bar andfollowers, of a friction shell, a spring and friction shoes within theshell, a wedge, anti-friction rollers on each side of the wedge, apreliminary compression follower interposed between one of the followersand the spring, a cap plate for the friction shell, a connecting bar, aseparate piece coupling member having roller centering arms, and a key,said connecting bar and key having interengaging coupling devices andsaid cap plate and key having interiitting ball and socket faces,

said coupling member and wedge having interengaging coupling devices,substantially as specified.

l2, In a friction draft rigging, the combination with the draw-bar andfollowers, of a friction shell, a spring and friction shoes within theshell, a wedge, anti-friction rollers on each side of the wedge, apreliminary compression follower interposed between one of the followersand the spring, a cap plate for the friction shell, a connecting bar, aseparate piece coupling member having roller centering arms, and a key,said connecting bar and key having interengaging coupling devices andsaid cap plate and key having interitting ball and socket faces, saidYcoupling member and connecting bar having interengaging couplingdevices, and said coupling member' and wedge having interengagingcoupling devices, substantially as specified.

13. In a draft rigging, the combination with a connecting bar having ahead provided with a curved iange, of a ca havingy a hemisphericalsocket, and a coup ing key having a hemispherical face, and a curvedsocket to receive the curved iiange of the connecting bar, substantiallyas specified'.

14. In a draft rigging, having a spring, cooperating friction membersand an antifriction roller, a coupling member provided with centeringarms embracing the ends of the roller, substantially as specified.

15. In a draft rigging, having a spring and cooperating frictionmembers, the combination of a connecting bar with a cap plate, and acoupling key, said cap and key having interfitting ball and socket facesand said cap and key having interengaging coupling devices,substantially as specified.

JOHN F. OCONNOR.

Vitnesses 1 H. M. MUNDAY, ESTHER ABRAMs

